British citizenship is highly sought after, offering the right to live and work in the UK, access to public services, and the ability to travel with a British passport. One of the recognised routes to citizenship is marriage to a British citizen or a person settled in the UK.
This guide outlines the eligibility criteria, the Indefinite Leave to Remain (ILR) stage, the naturalisation process, and the application steps for gaining British citizenship through marriage in 2025.
Eligibility Criteria
To be eligible for British citizenship by marriage, you must typically meet the following requirements:
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Be married to or in a civil partnership with a British citizen or a settled person in the UK.
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Have lived in the UK for a minimum of three years before applying.
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Prove English language proficiency through an approved English test or meet exemption criteria.
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Pass the Life in the UK Test, demonstrating knowledge of UK culture, history, and society.
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Meet the good character requirement, meaning no serious criminal convictions and compliance with UK immigration rules.
Indefinite Leave to Remain (ILR)
Before you can apply for British citizenship, most applicants must first obtain Indefinite Leave to Remain. ILR grants the right to live and work in the UK without time restrictions.
The specific ILR requirements depend on your immigration route, the length of your stay in the UK, and the nature of your marriage or partnership.
Naturalisation and Citizenship
Once you have ILR, you can apply for naturalisation as a British citizen. For those applying via marriage, the key requirements include:
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Have lived in the UK for at least three years before applying.
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Have spent no more than 270 days outside the UK during those three years.
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Have spent no more than 90 days outside the UK in the 12 months before applying.
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Show commitment to life in the UK, including integration into British society.
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Meet the English language and Life in the UK Test requirements.
Application Process
The application process for British citizenship by marriage involves:
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Completing the correct application form (AN form for naturalisation).
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Gathering supporting documents such as your marriage certificate, passport, proof of ILR, and evidence of meeting residence requirements.
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Booking and attending a biometric appointment to provide fingerprints and a digital photo.
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Paying the application fee (currently £1,580 in 2025 – check for updates).
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Submitting your application online and waiting for the Home Office decision, which typically takes 3–6 months.
Seeking Professional Advice
The citizenship application process can be complex, particularly for marriage-based applications. Consulting with an immigration solicitor or adviser can help you:
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Confirm you meet the eligibility requirements.
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Avoid common mistakes that can delay or jeopardise your application.
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Prepare a strong and well‑documented submission.
Conclusion
Gaining British citizenship by marriage is a significant milestone for those wishing to make the UK their permanent home. By understanding the eligibility rules, securing ILR, and preparing a thorough application, you can increase your chances of success.
For personalised guidance tailored to your circumstances, consider consulting a UK immigration professional — and take the next step towards becoming a British citizen.